Metropolitan Council Master Water Supply Plan March 11, 2009 Christopher Elvrum Manager, Water Supply Planning Keith Buttleman Assistant General Manager, Environmental Quality Assurance

Purpose  Draft Master Water Supply Plan  Public review comments  Master Plan completion schedule

Master Plan Conclusions Overall supplies are regionally adequate Some water supply issues will occur using traditional sources Options available to address potential issues Early identification of issues critical Ongoing assessment will guide sustainable water use choices

Goal and Principles Goal: Ensure a sustainable water supply for current and future generations. Principles  Water supply integral component of planning  Regional context for local decisions  All hydrologic systems considered  Water quality important  Interjurisdictional cooperation viable option  Cost-effectiveness considered  Wise use critical

Availability Analysis Population forecasts Land use Water use Climate Groundwater recharge Contamination Aquifer analysis Water Supply Availability Analysis Issue Identification METROPOLITAN AREA WATER SUPPLY MASTER PLAN Ongoing Evaluation ConservationSurface Water Evaluation

Metro Model 2 4,913 miles 2 Includes entire metro 9 layers Unconsolidated Prairie du Chien St. Lawrence Ironton-Galesville Mt. Simon St. Peter Jordan Eau Claire Franconia

Model Questions Are supplies available where we need them? Will pumping harm: —neighboring wells —natural resources —the aquifer How will climate and land use affect future availability?

Planning horizons: 2030, 2050 Municipal water use drives water demand growth —Non-municipal demand included; no change forecasted Current sources used for future demand whenever possible Scope and Assumptions

Water Supply Development Issues Significant decline in aquifers Well interference Impacts on surface waters Significant uncertainty regarding aquifer extent and productivity Groundwater contamination and vulnerability to contamination

DRAFT

Reporting Results: Community Water Supply Profiles Current and projected water use Current Sources Available Sources Issues that need to be addressed Potential impact to surface waters

Issue Responses Issue: Potential impact to surface waters Threshold >1m predicted decline in surficial aquifer by 2030 Response Develop resource protection thresholds Daily measurements at wells and resource

Issue Responses Development of resource protection thresholds Increased monitoring and data collection Evaluation of supply alternatives Increased conservation Limit withdrawals - Use alternative source is an option

DRAFT

Components of the Plan Report Community Profiles Issue Responses Conservation Toolbox Water Supply Make-A-Map Application

Master Plan Public Comments Period November 3 – December 16 th Public Meetings 10:00am-Noon: December 2, City of Woodbury City Hall December 3, City of Savage, City Hall December 4, City of Maple Grove Government Center , US Mail, Voice Mail, Fax Mail: Metropolitan Council Data Center, 390 N. Robert Street, St. Paul, MN Fax: Public Comment Line: TTY:

Public Commenters Public meetings —46 attendees from: –10 cities and townships –counties, –DNR, MDH, EQB, –consultants, non-profits –Metro Cities (AMM), and –Representative Paul Gardner —4 Metropolitan Area Water Supply Advisory Committee Members Letters/ s Total of 59 commenters

Comments Metro Model 2 Technical Analysis Integrating Water Supply with Comprehensive Planning Roles and Responsibilities Development of community Profiles and Issue Responses Implementing and Updating the Master Plan Surface water and Stormwater

Model Recalibration Incorporate additional data More refined assessment Changes made to the community profiles

Report Clarification Technical methods in more detail Water supply and comprehensive planning integration Plan provides guidance Response reasonableness Issue identification and screening methods Ongoing planning

Master Water Supply Plan Result of an inclusive process Comprehensive assessment of long-term demand and supply availability Framework for basing planning and policy decisions

Next Steps Second Draft Currently Available for Review Final Advisory Committee Review – March 26 DNR/Met Council Approval – April/May